A ball expanding plug mounting and dismounting tool

Abstract

The utility model discloses a kind of ball expansion type plug assembly and disassembly jigs, it is related to tool fixture technical field, including ontology, ontology is equipped with base, base can be supported in the outer peripheral wall of workpiece at least two different positions, to avoid the rotation or swing of workpiece when installing.The ontology is equipped with the movable connection of pressing block, pressing block is oppositely arranged with base, and pressing block can also press and contact at least two different positions in the outer peripheral wall of workpiece, so that workpiece is stably placed in base, and the stability of workpiece clamping is improved.The ontology is equipped with portal, and pressing block is movably connected to portal, and portal is equipped with first slot, and pressing block is equipped with second slot, knocking rod can pass through first slot and second slot and contact with workpiece, so that knocking rod is not blocked to workpiece for knocking, convenient to operate, and it is beneficial to improve installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a ball-expansion plug assembly and disassembly fixture. Background Technology

[0002] In related technologies, ball-expansion plugs are sealing elements that operate based on the principle of pressure expansion and are widely used for sealing circular workpieces in fields such as die-casting molds. During installation, the plug needs to be hammered into the sealing hole of the workpiece, a process that requires the workpiece to be firmly clamped. Currently, vise-type clamps are commonly used for fixing, but in actual operation, because vises only provide two clamping surfaces, the clamping force on circular workpieces is insufficient. Under hammering force, the workpiece is prone to loosening or even rotating, posing safety hazards and causing the plug to not be firmly hammered, leading to seal failure and leakage. Furthermore, operating vises to clamp circular workpieces of different sizes is time-consuming and labor-intensive, especially for small workpieces where the clamp body can easily obstruct the hammering operation; for excessively long large workpieces, there is a difficulty in effectively clamping them. Therefore, there is an urgent need for a specialized clamp that can stably, efficiently, and safely clamp circular workpieces for the installation and removal of ball-expansion plugs. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a ball-expansion plug installation and removal fixture, which improves clamping stability and thus achieves efficient installation.

[0004] A ball-expansion plug assembly / disassembly fixture according to an embodiment of the present invention includes: The main body is equipped with a base, which can support at least two different positions on the outer peripheral wall of the workpiece. The main body is provided with a movable pressure block, which is arranged opposite to the base. The pressure block can also press against at least two different positions on the outer peripheral wall of the workpiece, so that the workpiece is stably placed on the base. The main body is provided with a gantry, and the pressure block is movably connected to the gantry. The gantry is provided with a first slot, and the pressure block is provided with a second slot. The striking rod can pass through the first slot and the second slot to contact the workpiece.

[0005] A ball-expansion plug mounting and dismounting fixture according to an embodiment of the present invention has at least the following beneficial effects: The embodiment includes a main body with a base mounted on it. The base can support the workpiece at at least two different positions on its outer peripheral wall, thereby preventing the workpiece from rotating or swaying during installation. The main body has a movablely connected pressure block, which is positioned opposite the base. The pressure block can also press against at least two different positions on the outer peripheral wall of the workpiece, ensuring the workpiece is stably placed on the base and improving the stability of workpiece clamping. The main body has a gantry, with the pressure block movably connected to it. The gantry has a first slot, and the pressure block has a second slot. A striking rod can pass through the first and second slots to contact the workpiece, thus not obstructing the striking rod from striking the workpiece, facilitating operation and improving installation efficiency.

[0006] According to some embodiments of the present invention, the workpiece has an installation channel, and a second slot can correspond to the installation channel. The installation channel is used to install a seal so that the striking rod can strike and install the seal.

[0007] According to some embodiments of the present invention, the base is provided with two first contact surfaces, and the two first contact surfaces have a preset angle between them.

[0008] According to some embodiments of the present invention, the first contact surface is an inclined plane, and multiple teeth are provided on the first contact surface, which helps to increase contact resistance and prevent the workpiece from rotating during processing.

[0009] According to some embodiments of the present invention, the pressure block is provided with two second contact surfaces, and there is a preset angle between the two second contact surfaces.

[0010] According to some embodiments of the present invention, the second contact surface is an inclined plane, and multiple teeth are provided on the second contact surface, which helps to increase contact resistance and prevent the workpiece from rotating during processing.

[0011] According to some embodiments of the present invention, the base is provided with a third slot, and the workpiece has a channel corresponding to the position of the third slot, so as to facilitate the installation of a seal at the bottom of the workpiece.

[0012] According to some embodiments of this utility model, the angle between the two second contact surfaces is defined as α, which satisfies: 100°≤α≤120°, to ensure the stability of the workpiece clamping.

[0013] According to some embodiments of this utility model, a screw is screwed onto the gantry, and a pressure block is connected to the bottom of the screw. Rotating the screw can adjust the height of the pressure block, which can accommodate workpieces with different outer diameters.

[0014] According to some embodiments of this utility model, the base is provided with a support platform, the top wall of the support platform is a plane, the bottom wall of the workpiece is a plane, the top wall of the support platform can cooperate with the bottom wall of the workpiece, so as to determine the direction of the workpiece during installation, and to prevent the workpiece from rotating during processing.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is an isometric view of a ball-expansion plug assembly and disassembly fixture according to an embodiment of the present utility model; Figure 2 This is a first cross-sectional view of a ball-expansion plug assembly and disassembly fixture according to an embodiment of the present utility model; Figure 3 This is a second sectional view of a ball-expansion plug assembly and disassembly fixture according to an embodiment of the present utility model; Figure 4 This is a front view of a ball-expansion plug assembly / disassembly fixture according to an embodiment of the present invention.

[0017] Figure label: Body 100; gantry 101; first slot 102; handle 103; screw 104; pressure block 105; first contact surface 106; teeth 107; second slot 108; striking rod 109; Base 110; support platform 111; second contact surface 112; third slot 113; workpiece 114; channel 115. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 4 A ball-expansion plug assembly / disassembly fixture according to an embodiment of this utility model includes a body 100, on which a base 110 is mounted. The base 110 can support at least two different positions on the outer peripheral wall of a workpiece 114, thereby preventing the workpiece 114 from rotating or swinging during installation. The body 100 is provided with a movable pressure block 105, which is arranged opposite to the base 110. The pressure block 105 can also press against at least two different positions on the outer peripheral wall of the workpiece 114, so that the workpiece 114 is stably placed on the base 110, improving the stability of the workpiece 114 clamping. The body 100 is provided with a gantry 101, and the pressure block 105 is movably connected to the gantry 101. The gantry 101 is provided with a first slot 102, and the pressure block 105 is provided with a second slot 108. A striking rod 109 can pass through the first slot 102 and the second slot 108 to contact the workpiece 114, thereby not obstructing the striking rod 109 from striking the workpiece 114, facilitating operation and improving installation efficiency.

[0023] Specifically, the body 100 is typically made of a robust metal material, such as cast iron or steel, to ensure sufficient rigidity and stability when subjected to impact forces. The bottom of the body 100 is designed with mounting holes, allowing it to be securely mounted to a workbench or floor using fasteners such as bolts, preventing the entire fixture from moving during operation.

[0024] The gantry 101 has a gantry-type structure, spanning the operating area of ​​the workpiece 114. The gantry 101 and the body 100 can be integrally formed by welding or casting, or they can be detachably connected by bolts, the latter facilitating transportation and maintenance. At the top center of the gantry 101, a vertically arranged screw 104 is screwed on. The upper end of the screw 104 has a handle 103 for easy manual rotation. Rotating the handle 103 drives the screw 104 to move up and down within the threaded hole of the gantry 101. The lower end of the screw 104 is connected to the pressure block 105 via a spherical bearing or similar universal joint, allowing the pressure block 105 to adaptively adjust its angle within a certain range to ensure uniform contact with the surface of the workpiece 114.

[0025] The bottom end of the screw 104 is screwed to the pressure block 105. The pressure block 105 can move up and down vertically under the drive of the screw 104, thereby achieving clamping and releasing actions. The bottom of the pressure block 105 is designed with two second contact surfaces 112. In this embodiment, both second contact surfaces 112 are inclined planes, and they form a preset angle, making the two second contact surfaces 112 V-shaped. Further, the angle between the two second contact surfaces 106 is defined as α. When α satisfies 100°≤α≤120°, it can provide the best clamping stability and force distribution for most common circular workpieces, including shafts, sleeves, and tubular parts. If the angle is too small, it may narrow the range of adaptability to workpiece diameter and the clamping force may be too concentrated; if the angle is too large, it will weaken the positioning and anti-rotation effect of the V-groove. Therefore, this angle range can achieve a balance between versatility and stability.

[0026] To further enhance the reliability of clamping and prevent the workpiece 114 from rotating when struck, a plurality of teeth 107 are machined on the second contact surface 112. These teeth 107 can be continuous patterns or spaced protrusions, and their material can be heat-treated to increase hardness and wear resistance.

[0027] Understandably, the top of the base 110 is designed with two first contact surfaces 106, which are also inclined planes. Furthermore, a predetermined angle α is formed between the two first contact surfaces 106. Similar to the second contact surface 112 on the pressure block 105, multiple teeth 107 are also provided on the first contact surfaces 106 to increase the friction with the outer wall of the workpiece 114. When the circular cross-section workpiece 114 is placed on the base 110, its outer peripheral wall will simultaneously contact the two first contact surfaces 106, forming two initial support points. Subsequently, when the operator rotates the handle 103 to press down the pressure block 105, the two second contact surfaces 112 on the pressure block 105 will press against two other different positions on the upper part of the outer peripheral wall of the workpiece 114. The workpiece 114 is firmly constrained between four contact points formed by the two first contact surfaces 106 of the base 110 and the two second contact surfaces 112 of the pressure block 105, achieving stable four-point contact clamping and effectively preventing the workpiece 114 from rotating or swinging during subsequent hammering operations.

[0028] It is understandable that when the pressure block 105 is pressed down to the working position, the first slot 102 and the second slot 108 are aligned in the vertical direction. For example... Figure 2 As shown, when installing the ball-expansion plug, the workpiece 114 has an installation channel 115 for installing the seal. The operator can pass the striking rod 109 from top to bottom through the first slot 102 on the gantry 101 and the second slot 108 on the pressure block 105, with its end finally directly abutting against the corresponding part of the ball-expansion plug or workpiece 114 to be installed. Since the entire force path of the striking rod 109 is unobstructed, the gantry 101 and pressure block 105 of the fixture itself will not obstruct it, thus ensuring that the striking force can be directly and effectively transmitted to the correct position, which is convenient for operation and improves the efficiency of installation and the reliability of the seal. In some embodiments, the first slot 102 is inclined relative to the vertical direction to accommodate the angle of the channel 115 on the workpiece 114.

[0029] For some special workpieces 114, the sealing plug may need to be installed from the bottom of the workpiece. For this purpose, a third slot 113 is also provided on the base 110. When the workpiece 114 is clamped on the fixture, a channel 115 on its bottom corresponds to the position of this third slot 113. In this way, the operator can insert tools from below into the third slot 113 and the channel 115 to complete the installation or removal of the bottom plug, demonstrating the versatility and comprehensive design of the fixture.

[0030] To further enhance the adaptability and stability of the fixture, a support platform 111 can be integrated into the base 110. The top wall of the support platform 111 is machined into a precise horizontal plane. The bottom wall of the workpiece 114 also has a flat surface (e.g., for some flanged shaft parts). When placing the workpiece 114, the flat surface of its bottom wall can mate with the top wall of the support platform 111. This not only helps to quickly determine the circumferential angle of the workpiece 114 during installation, ensuring that the mounting channel 115 can be accurately aligned with the second slot 108, but also provides an additional anti-torsional torque during machining, further preventing the workpiece 114 from rotating.

[0031] The workflow is as follows: First, the operator places the workpiece 114 on the two first contact surfaces 106 of the base 110. Then, the operator rotates the handle 103, driving the screw 104 to move the pressure block 105 downwards until the two second contact surfaces 112 on the pressure block 105 are firmly pressed against the workpiece 114. At this point, the workpiece 114 is stably clamped between the pressure block 105 and the base 110. Next, the operator passes the striking rod 109 through the first slot 102 and the second slot 108 to tap and install the ball-expansion plug on the workpiece 114. Because the workpiece 114 is reliably fixed and the striking path is unobstructed, the plug is ensured to be tightly installed in place, forming an effective seal. After the operation is completed, the operator rotates the handle 103 in the opposite direction to raise the pressure block 105, and then removes the workpiece 114.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A jig for assembling and disassembling a ball-expansion plug, characterized in that, include: The body is equipped with a base, which can support at least two different positions on the outer peripheral wall of the workpiece. The body is provided with a movable pressure block, which is arranged opposite to the base. The pressure block can also press against at least two different positions on the outer peripheral wall of the workpiece, so that the workpiece is stably placed on the base. The main body is provided with a gantry, the pressure block is movably connected to the gantry, the gantry is provided with a first slot, the pressure block is provided with a second slot, and the striking rod can pass through the first slot and the second slot to contact the workpiece.

2. The ball-expansion plug assembly and disassembly fixture according to claim 1, characterized in that, The workpiece has a mounting channel, and the second slot is capable of corresponding to the mounting channel, which is used to mount a seal.

3. The ball-expansion plug assembly and disassembly fixture according to claim 1, characterized in that, The base has two first contact surfaces, and there is a preset angle between the two first contact surfaces.

4. The ball-expansion plug assembly and disassembly fixture according to claim 3, characterized in that, The first contact surface is an inclined plane, and the first contact surface is provided with multiple teeth.

5. The ball-expansion plug assembly and disassembly fixture according to claim 1, characterized in that, The pressure block has two second contact surfaces, and there is a preset angle between the two second contact surfaces.

6. The ball-expansion plug assembly and disassembly fixture according to claim 5, characterized in that, The second contact surface is an inclined plane, and the second contact surface is provided with multiple teeth.

7. The ball-expansion plug assembly and disassembly fixture according to claim 1, characterized in that, The base is provided with a third slot, and the workpiece has a channel corresponding to the position of the third slot.

8. A ball-expansion plug assembly and disassembly fixture according to claim 5, characterized in that, Define the angle between the two second contact surfaces as α, which satisfies: 100°≤α≤120°.

9. A ball-expansion plug assembly / disassembly fixture according to claim 7, characterized in that, The gantry is screwed with a screw rod, the bottom of which is connected to the pressure block. Rotating the screw rod can adjust the height of the pressure block.

10. A ball-expansion plug assembly / disassembly fixture according to claim 1, characterized in that, The base is provided with a support platform, the top wall of the support platform is flat, the bottom wall of the workpiece is flat, and the top wall of the support platform can cooperate with the bottom wall of the workpiece.

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